题目内容
Since the recent river pollution in several provinces, people _______ more and more attention to the quality and safety of drinking water.
| A．pay | B．are paying | C．have paid | D．have been paying |
D
解析试题分析：考查时态：句意：自从最近几个省的河流污染，人们一直在越来越多的关注饮用水的质量问题。时间状语是.Since the recent river pollution in several provinces,可知与完成式连用，因为这个动作是过去到现在一直在做，而且可能还要继续下去，所以用现在完成进行时，选D。
考点：考查时态
The silence in the dark building was scaring. No sound and voice____ heard at that moment.
| A．Were | B．Was | C．Is | D．are |
As he never raises a finger to help me with the dinner, I the thanksgiving meal from this afternoon till now.
| A．have been preparing | B．prepared |
| C．had been preparing | D．prepare |
In the past few months, the central bank governor and others ______ measures to prevent prices from rising too fast．
| A．called for | B．are calling for |
| C．have called for | D．will call for |
--- _____ the change of the schedule ______?
--- Oh, God! I forgot all about it. I’ll do it right now.
| A．Has, been announced | B．Was, announced |
| C．Has, announced | D．Had, been announced |
-- I’m exhausted. I _____ on a project day and night.
-- You’d better have several days off after finishing it. Otherwise you might break down.
| A．worked | B．have worked |
| C．work | D．have been working |
— Remember the first time we met, Jim?
— Of course I do. You _______ in the library.
| A．were reading | B．had read | C．have read | D．read |
—Look! Somebody _____ the sofa.
—Well, it wasn’t me. I didn’t do it.
| A．is cleaning | B．was cleaning |
| C．has cleaned | D．had cleaned |